55 lines
1.8 KiB
C
55 lines
1.8 KiB
C
/*
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* MIT License
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*
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* Copyright (c) 2022 Joey Castillo
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*
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* Permission is hereby granted, free of charge, to any person obtaining a copy
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* of this software and associated documentation files (the "Software"), to deal
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* in the Software without restriction, including without limitation the rights
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* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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* copies of the Software, and to permit persons to whom the Software is
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* furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in all
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* copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
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* SOFTWARE.
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*/
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#include "watch_spi.h"
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struct io_descriptor *spi_io;
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void watch_enable_spi(void) {
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SPI_0_init();
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spi_m_sync_get_io_descriptor(&SPI_0, &spi_io);
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spi_m_sync_enable(&SPI_0);
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}
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void watch_disable_spi(void) {
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spi_m_sync_disable(&SPI_0);
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spi_io = NULL;
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}
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bool watch_spi_write(const uint8_t *buf, uint16_t length) {
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return !!io_write(spi_io, buf, length);
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}
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bool watch_spi_read(uint8_t *buf, uint16_t length) {
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return !!io_read(spi_io, buf, length);
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}
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bool watch_spi_transfer(const uint8_t *data_out, uint8_t *data_in, uint16_t length) {
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struct spi_xfer xfer;
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xfer.txbuf = (uint8_t *)data_out;
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xfer.rxbuf = data_in;
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xfer.size = length;
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return !!spi_m_sync_transfer(&SPI_0, &xfer);
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}
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